XPK Start: Thu Apr 23 14:27:01 UTC 2026 PyTorch was not found. Models won't be available and only tokenizers, configuration and file/data utilities can be used. `rope_parameters`'s factor field must be a float >= 1, got 40 `rope_parameters`'s beta_fast field must be a float, got 32 `rope_parameters`'s beta_slow field must be a float, got 1 DeepseekV32Config got `key=rope_scaling` in kwargs but hasn't set it as attribute. For RoPE standardization you need to set `self.rope_parameters` in model's config. 2026-04-23 14:27:26.326212: E external/local_xla/xla/stream_executor/cuda/cuda_platform.cc:51] failed call to cuInit: INTERNAL: CUDA error: Failed call to cuInit: UNKNOWN ERROR (303) I0423 14:27:26.901276 139895056369472 max_utils.py:273] Attempting to initialize the jax distributed system... I0423 14:27:35.943302 139895056369472 distributed.py:149] Starting JAX distributed service on [::]:8482 I0423 14:27:35.945663 139895056369472 distributed.py:172] Connecting to JAX distributed service on mt-03-dropout-ni2a3-slice-job-0-0.mt-03-dropout-ni2a3:8482 I0423 14:27:36.844019 139895056369472 max_utils.py:284] Jax distributed system initialized! I0423 14:27:42.150679 139895056369472 max_utils.py:800] System Information: Jax Version: 0.9.2 I0423 14:27:42.150785 139895056369472 max_utils.py:801] System Information: Jaxlib Version: 0.9.2 I0423 14:27:42.150826 139895056369472 max_utils.py:802] System Information: Jax Backend: PJRT C API TFRT TPU v6 lite Built on Mar 4 2026 11:32:08 (1772652728) cl/878335365 I0423 14:27:42.150864 139895056369472 train_utils.py:391] WARNING: Sequence packing is essentially ignored for synthetic data. Please use a real dataset to use sequence packing. I0423 14:27:42.851935 139895056369472 maxtext_utils.py:1771] Num_devices: 32, shape (1, 1, 1, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1) I0423 14:27:42.963818 139895056369472 checkpointing.py:688] Setting up checkpoint logger... I0423 14:27:42.963940 139895056369472 checkpointing.py:234] Creating checkpoint manager with ocdbt=True and zarr3=True I0423 14:27:42.963985 139895056369472 pytree_checkpoint_handler.py:592] save_device_host_concurrent_bytes=None I0423 14:27:42.964197 139895056369472 base_pytree_checkpoint_handler.py:441] Created BasePyTreeCheckpointHandler: use_ocdbt=True, use_zarr3=True, pytree_metadata_options=PyTreeMetadataOptions(support_rich_types=False), array_metadata_store=<orbax.checkpoint._src.metadata.array_metadata_store.Store object at 0x7f3b23844b30>, enable_pinned_host_transfer=False, save_concurrent_bytes: 96000000000 (89.4 GiB), restore_concurrent_bytes: 96000000000 (89.4 GiB) I0423 14:27:45.926759 139895056369472 checkpointing.py:266] Enabling policy for fixed interval checkpointing. I0423 14:27:45.927001 139895056369472 checkpoint_manager.py:708] [process=6][thread=MainThread] CheckpointManager init: checkpointers=None, item_names=('items',), item_handlers={'items': <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7f26d82253d0>}, handler_registry=None I0423 14:27:45.927261 139895056369472 composite_checkpoint_handler.py:237] Deferred registration for item: "items". Adding handler `<orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7f26d82253d0>` for item "items" and save args `<class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeSaveArgs'>` and restore args `<class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>` to `_handler_registry`. I0423 14:27:45.927377 139895056369472 composite_checkpoint_handler.py:237] Deferred registration for item: "metrics". Adding handler `<orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7f26d036e570>` for item "metrics" and save args `<class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>` and restore args `<class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>` to `_handler_registry`. I0423 14:27:45.927416 139895056369472 composite_checkpoint_handler.py:505] Initialized registry DefaultCheckpointHandlerRegistry({('items', <class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeSaveArgs'>): <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7f26d82253d0>, ('items', <class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>): <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7f26d82253d0>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7f26d036e570>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7f26d036e570>}). I0423 14:27:45.927741 139895056369472 abstract_checkpointer.py:35] orbax-checkpoint version: 0.11.34 I0423 14:27:45.927815 139895056369472 async_checkpointer.py:192] [process=6][thread=MainThread] Using barrier_sync_fn: <function get_barrier_sync_fn.<locals>._fn at 0x7f26d032b1a0> timeout: 1200 secs and primary_host=0 for async checkpoint writes I0423 14:27:47.013581 139895056369472 checkpoint_manager.py:1812] Found 0 checkpoint steps in gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_post_train_fixes_20260423_124541/nnx_xpk_feat_nnx_post_train_fixes_20260423_124541_03_dropout/checkpoints I0423 14:27:47.441961 139895056369472 checkpoint_manager.py:929] [process=6][thread=MainThread] CheckpointManager created, primary_host=0, CheckpointManagerOptions=CheckpointManagerOptions(save_interval_steps=1, max_to_keep=None, keep_time_interval=None, keep_period=None, should_keep_fn=None, best_fn=None, best_mode='max', keep_checkpoints_without_metrics=True, step_prefix=None, step_format_fixed_length=None, step_name_format=None, create=True, cleanup_tmp_directories=False, save_on_steps=frozenset(), single_host_load_and_broadcast=False, todelete_subdir=None, todelete_full_path=None, enable_background_delete=False, read_only=False, enable_async_checkpointing=True, async_options=None, multiprocessing_options=MultiprocessingOptions(primary_host=0, active_processes=None, barrier_sync_key_prefix=None), should_save_fn=None, file_options=FileOptions(path_permission_mode=None), save_root_metadata=True, temporary_path_class=None, save_decision_policy=FixedIntervalPolicy(interval=10), preservation_policy=LatestN(n=None), prevent_write_metrics=False, enable_should_save_is_saving_in_progress_check=True, enable_per_process_directory_creation=False, lightweight_initialize=False), root_directory=gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_post_train_fixes_20260423_124541/nnx_xpk_feat_nnx_post_train_fixes_20260423_124541_03_dropout/checkpoints: <orbax.checkpoint.checkpoint_manager.CheckpointManager object at 0x7f26d822a3c0> I0423 14:27:47.442172 139895056369472 checkpointing.py:302] Checkpoint manager created! I0423 14:27:47.817409 139895056369472 checkpointing.py:578] checkpoint manager exists so trying to load this run's existing checkpoint I0423 14:27:47.817535 139895056369472 checkpointing.py:676] No existing checkpoints found, not restoring checkpoint. fsdp: 32 I0423 14:27:49.203579 139895056369472 maxtext_utils.py:1889] decoder/decoder_norm/scale/value Shape: float32[2048] Physical: (None,) I0423 14:27:49.203695 139895056369472 maxtext_utils.py:1889] decoder/layers/mlp/wi_0/kernel/value Shape: float32[2048,16,7168] Physical: ('fsdp', None, None) I0423 14:27:49.203747 139895056369472 maxtext_utils.py:1889] decoder/layers/mlp/wi_1/kernel/value Shape: float32[2048,16,7168] Physical: ('fsdp', None, None) I0423 14:27:49.203790 139895056369472 maxtext_utils.py:1889] decoder/layers/mlp/wo/kernel/value Shape: float32[7168,16,2048] Physical: (None, None, 'fsdp') I0423 14:27:49.203828 139895056369472 maxtext_utils.py:1889] decoder/layers/post_self_attention_layer_norm/scale/value Shape: float32[2048,16] Physical: (None, None) I0423 14:27:49.203861 139895056369472 maxtext_utils.py:1889] decoder/layers/pre_self_attention_layer_norm/scale/value Shape: float32[2048,16] Physical: (None, None) I0423 14:27:49.203896 139895056369472 maxtext_utils.py:1889] decoder/layers/self_attention/key/kernel/value Shape: float32[2048,16,16,128] Physical: ('fsdp', None, None, None) I0423 14:27:49.203932 139895056369472 maxtext_utils.py:1889] decoder/layers/self_attention/out/kernel/value Shape: float32[16,16,128,2048] Physical: (None, None, None, 'fsdp') I0423 14:27:49.203965 139895056369472 maxtext_utils.py:1889] decoder/layers/self_attention/query/kernel/value Shape: float32[2048,16,16,128] Physical: ('fsdp', None, None, None) I0423 14:27:49.203997 139895056369472 maxtext_utils.py:1889] decoder/layers/self_attention/value/kernel/value Shape: float32[2048,16,16,128] Physical: ('fsdp', None, None, None) I0423 14:27:49.204027 139895056369472 maxtext_utils.py:1889] decoder/logits_dense/kernel/value Shape: float32[2048,32000] Physical: ('fsdp', None) I0423 14:27:49.204058 139895056369472 maxtext_utils.py:1889] token_embedder/embedding/value Shape: float32[32000,2048] Physical: (None, 'fsdp') I0423 14:27:49.612065 139895056369472 nnx_decoders.py:465] nnx_decoders/carry Logical: bfloat16[32,128,2048]....................................... ('activation_batch', 'activation_norm_length', 'activation_embed'). I0423 14:27:49.612174 139895056369472 nnx_decoders.py:465] nnx_decoders/carry Physical: bfloat16[32,128,2048]....................................... ('fsdp', None, None). I0423 14:27:49.617079 139895056369472 nnx_decoders.py:465] Unknown Logical: bfloat16[32,128,2048]....................................... ('activation_batch', 'activation_norm_length', 'activation_embed'). I0423 14:27:49.617153 139895056369472 nnx_decoders.py:465] Unknown Physical: bfloat16[32,128,2048]....................................... ('fsdp', None, None). I0423 14:27:49.633676 139895056369472 attentions.py:1088] attentions/inputs_q Logical: bfloat16[32,128,2048]....................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed'). I0423 14:27:49.633741 139895056369472 attentions.py:1088] attentions/inputs_q Physical: bfloat16[32,128,2048]....................................... ('fsdp', None, None). I0423 14:27:49.649539 139895056369472 attentions.py:1089] attentions/inputs_kv Logical: bfloat16[32,128,2048]....................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed'). I0423 14:27:49.649601 139895056369472 attentions.py:1089] attentions/inputs_kv Physical: bfloat16[32,128,2048]....................................... ('fsdp', None, None). I0423 14:27:49.673441 139895056369472 attentions.py:1154] attentions/query Logical: bfloat16[32,128,16,128]..................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim'). I0423 14:27:49.673518 139895056369472 attentions.py:1154] attentions/query Physical: bfloat16[32,128,16,128]..................................... ('fsdp', None, None, None). I0423 14:27:49.689542 139895056369472 attentions.py:1155] attentions/key Logical: bfloat16[32,128,16,128]..................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim'). I0423 14:27:49.689613 139895056369472 attentions.py:1155] attentions/key Physical: bfloat16[32,128,16,128]..................................... ('fsdp', None, None, None). I0423 14:27:49.705461 139895056369472 attentions.py:1156] attentions/value Logical: bfloat16[32,128,16,128]..................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim'). I0423 14:27:49.705539 139895056369472 attentions.py:1156] attentions/value Physical: bfloat16[32,128,16,128]..................................... ('fsdp', None, None, None). I0423 14:27:49.734896 139895056369472 attentions.py:1198] attentions/out Logical: bfloat16[32,128,16,128]..................................... ('activation_batch', 'activation_attn_length', 'activation_heads', 'activation_kv'). I0423 14:27:49.734972 139895056369472 attentions.py:1198] attentions/out Physical: bfloat16[32,128,16,128]..................................... ('fsdp', None, None, None). I0423 14:27:49.760986 139895056369472 linears.py:525] linears/x Logical: bfloat16[32,128,7168]....................................... ('activation_batch', 'activation_length', 'activation_mlp'). I0423 14:27:49.761058 139895056369472 linears.py:525] linears/x Physical: bfloat16[32,128,7168]....................................... ('fsdp', None, None). I0423 14:27:53.447547 139895056369472 max_utils.py:791] Total memory size: 0.8 GB, Output size: 0.4 GB, Temp size: 0.4 GB, Argument size: 0.4 GB, Host temp size: 0.0 GB. I0423 14:27:53.449901 139895056369472 metric_logger.py:301] number parameters: 1.104 billion I0423 14:27:57.380228 139895056369472 checkpointing.py:794] Waiting for step 0 to finish before checkpoint... I0423 14:27:57.796327 139895056369472 checkpointing.py:798] Waited 0.41608738899230957 seconds for step 0 to finish before starting checkpointing. I0423 14:27:57.798506 139895056369472 checkpoint_manager.py:2009] [process=6][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0423 14:27:57.800552 139895056369472 checkpoint_manager.py:1512] [process=6] Saving checkpoint at step 0 I0423 14:27:57.802233 139895056369472 event_tracking.py:70] [process=6] [async] Started save checkpoint @ gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_post_train_fixes_20260423_124541/nnx_xpk_feat_nnx_post_train_fixes_20260423_124541_03_dropout/checkpoints/0. I0423 14:27:58.096071 139895056369472 signaling_client.py:364] Using JaxDistributedSignalingClient I0423 14:27:58.097084 139895056369472 jax_array_handlers.py:360] Scheduling D2H of 69 prioritized jax.Array. I0423 14:27:58.097158 139895056369472 replica_slices.py:424] Transferring arrays to host memory with options: use_replica_parallel=True, min_slice_bytes_for_replica_parallel=None, max_replicas_for_replica_parallel=None, enable_pinned_host_transfer=False I0423 14:27:58.385535 139895056369472 base_pytree_checkpoint_handler.py:154] [process=6][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.290200s I0423 14:27:58.385711 139895056369472 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/blocking_gbytes_per_sec: 5.158 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.29905176162719727 s) (per-host) I0423 14:27:58.385765 139895056369472 base_pytree_checkpoint_handler.py:768] [process=6][thread=MainThread] Initiated Pytree async_save. Time taken: 0.299117s (batch_requests_ready=0.002934s, total_serialization_initiated=0.296110s, others=0.000073s) I0423 14:27:58.385864 139895056369472 composite_checkpoint_handler.py:715] [process=6][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.303178s (all_items=0.000018s, per_item={'items': '0.00001812'}, temp_paths=0.303159) I0423 14:27:58.386622 139895056369472 event_tracking.py:125] [process=6] [async] Finished blocking save in 0.59 seconds. Continuing save @ gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_post_train_fixes_20260423_124541/nnx_xpk_feat_nnx_post_train_fixes_20260423_124541_03_dropout/checkpoints/0. I0423 14:27:58.386958 139767739315968 async_checkpointer.py:76] [process=6][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-23 14:47:58.386920 I0423 14:27:58.388903 139895056369472 checkpoint_manager.py:1560] [process=6][thread=MainThread][step=0] Starting CheckpointManager Save Finalize thread=save_finalize I0423 14:27:58.389175 139765609391872 async_checkpointer.py:280] [process=6][thread=save_finalize] Waiting for background save thread=async_save. I0423 14:27:58.389299 139895056369472 standard_logger.py:34] {'step': 0, 'event_type': 'save', 'directory': 'gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_post_train_fixes_20260423_124541/nnx_xpk_feat_nnx_post_train_fixes_20260423_124541_03_dropout/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776954477.7984889, 'wait_for_prev_duration_secs': 5.984306335449219e-05, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776954477.8005908, 'checkpointer_blocking_duration_secs': 0.586524248123169, 'get_old_steps_start_time': 1776954478.38714, 'get_old_steps_duration_secs': 2.9325485229492188e-05, 'checkpoint_manager_blocking_start_time': 1776954477.7967067, 'checkpoint_manager_blocking_duration_secs': 0.5925552845001221} I0423 14:27:58.389408 139895056369472 checkpointing.py:409] Started an asynchronous checkpoint save for step 0 I0423 14:27:58.389477 139895056369472 max_utils.py:750] Memstats: After params initialized: I0423 14:27:58.389524 139895056369472 max_utils.py:756] Using (GB) 0.41 / 31.25 (1.312000%) on TPU_24(process=6,(0,6,0,0)) I0423 14:27:58.389556 139895056369472 max_utils.py:756] Using (GB) 0.41 / 31.25 (1.312000%) on TPU_25(process=6,(1,6,0,0)) I0423 14:27:58.389588 139895056369472 max_utils.py:756] Using (GB) 0.41 / 31.25 (1.312000%) on TPU_28(process=6,(0,7,0,0)) I0423 14:27:58.389611 139895056369472 max_utils.py:756] Using (GB) 0.41 / 31.25 (1.312000%) on TPU_29(process=6,(1,7,0,0)) I0423 14:27:58.712296 139895056369472 metric_logger.py:196] completed step: 0, seconds: 3.929, TFLOP/s/device: 0.204, Tokens/s/device: 32.576, total_weights: 4096, loss: 10.874, lm_loss: 10.874, perplexity: 52805.141 I0423 14:27:58.800764 139895056369472 metric_logger.py:196] completed step: 1, seconds: 1.330, TFLOP/s/device: 0.602, Tokens/s/device: 96.234, total_weights: 4096, loss: 10.892, lm_loss: 10.892, perplexity: 53764.488 I0423 14:27:59.214937 139895056369472 metric_logger.py:196] completed step: 2, seconds: 0.019, TFLOP/s/device: 41.451, Tokens/s/device: 6624.916, total_weights: 4096, loss: 9.969, lm_loss: 9.969, perplexity: 21350.100 I0423 14:27:59.285786 139895056369472 metric_logger.py:196] completed step: 3, seconds: 0.404, TFLOP/s/device: 1.981, Tokens/s/device: 316.691, total_weights: 4096, loss: 9.125, lm_loss: 9.125, perplexity: 9186.262 I0423 14:27:59.427374 139895056369472 metric_logger.py:196] completed step: 4, seconds: 0.088, TFLOP/s/device: 9.151, Tokens/s/device: 1462.573, total_weights: 4096, loss: 8.469, lm_loss: 8.469, perplexity: 4765.735 I0423 14:27:59.435277 139895056369472 metric_logger.py:196] completed step: 5, seconds: 0.070, TFLOP/s/device: 11.386, Tokens/s/device: 1819.836, total_weights: 4096, loss: 7.908, lm_loss: 7.908, perplexity: 2719.938 I0423 14:28:01.452205 2807 google_auth_provider.cc:181] Running on GCE, using service account 562977990677-compute@developer.gserviceaccount.com I0423 14:28:03.481780 139765617784576 array_metadata_store.py:203] [process=6][thread=array_type_handler] Wrote 69 array_metadata.ArrayMetadata to gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_post_train_fixes_20260423_124541/nnx_xpk_feat_nnx_post_train_fixes_20260423_124541_03_dropout/checkpoints/0/items/array_metadatas/process_6 I0423 14:28:09.520086 139895056369472 metric_logger.py:196] completed step: 6, seconds: 0.142, TFLOP/s/device: 5.624, Tokens/s/device: 898.927, total_weights: 4096, loss: 7.554, lm_loss: 7.554, perplexity: 1909.063 I0423 14:28:09.590883 139895056369472 metric_logger.py:196] completed step: 7, seconds: 10.016, TFLOP/s/device: 0.080, Tokens/s/device: 12.780, total_weights: 4096, loss: 7.313, lm_loss: 7.313, perplexity: 1500.206 I0423 14:28:09.661512 139895056369472 metric_logger.py:196] completed step: 8, seconds: 0.076, TFLOP/s/device: 10.489, Tokens/s/device: 1676.424, total_weights: 4096, loss: 7.091, lm_loss: 7.091, perplexity: 1200.912 I0423 14:28:09.732720 139895056369472 checkpointing.py:794] Waiting for step 9 to finish before checkpoint... I0423 14:28:09.733404 139895056369472 checkpointing.py:798] Waited 0.0006930828094482422 seconds for step 9 to finish before starting checkpointing. I0423 14:28:09.735778 139895056369472 checkpoint_manager.py:2020] [process=6][thread=MainThread][step=0][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0423 14:28:29.905306 139767739315968 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/gbytes_per_sec: 49.644 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 31.818607568740845 s) (per-host) I0423 14:28:29.905433 139767739315968 async_checkpointer.py:90] [process=6][thread=async_save] 3 Handler Commit operations completed. Time taken: 31.518364s. I0423 14:28:40.963416 139767739315968 async_checkpointer.py:160] [process=6][thread=async_save] Background save thread done. Time taken: 42.576330s. I0423 14:28:40.963663 139765609391872 async_checkpointer.py:288] [process=6][thread=save_finalize] Done with waiting for background save thread=async_save. I0423 14:28:40.963729 139765609391872 async_checkpointer.py:298] [process=6][thread=save_finalize] No errors found in background save thread=async_save. I0423 14:28:40.963789 139765609391872 checkpoint_manager.py:2137] [process=6][thread=save_finalize][step=0] CheckpointManager Save Finalize is syncing with other hosts... I0423 14:28:40.965599 139765609391872 checkpoint_manager.py:2146] [process=6][thread=save_finalize][step=0] CheckpointManager Save Finalize is done on all hosts. I0423 14:28:40.965770 139895056369472 checkpoint_manager.py:2032] [process=6][thread=MainThread][step=0][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=0. W0423 14:28:40.965903 139895056369472 checkpoint_manager.py:1452] Waiting for previous save to complete took 31.230126 seconds. If this number is high, consider checkpointing less frequently. I0423 14:28:40.968010 139895056369472 checkpoint_manager.py:1512] [process=6] Saving checkpoint at step 9 I0423 14:28:40.970125 139895056369472 event_tracking.py:70] [process=6] [async] Started save checkpoint @ gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_post_train_fixes_20260423_124541/nnx_xpk_feat_nnx_post_train_fixes_20260423_124541_03_dropout/checkpoints/9. I0423 14:28:41.693886 139895056369472 jax_array_handlers.py:360] Scheduling D2H of 69 prioritized jax.Array. I0423 14:28:41.693982 139895056369472 replica_slices.py:424] Transferring arrays to host memory with options: use_replica_parallel=True, min_slice_bytes_for_replica_parallel=None, max_replicas_for_replica_parallel=None, enable_pinned_host_transfer=False I0423 14:28:41.735271 139895056369472 base_pytree_checkpoint_handler.py:154] [process=6][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.043075s I0423 14:28:41.735411 139895056369472 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/blocking_gbytes_per_sec: 30.815 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.05005908012390137 s) (per-host) I0423 14:28:41.735458 139895056369472 base_pytree_checkpoint_handler.py:768] [process=6][thread=MainThread] Initiated Pytree async_save. Time taken: 0.050114s (batch_requests_ready=0.002675s, total_serialization_initiated=0.047379s, others=0.000061s) I0423 14:28:41.735539 139895056369472 composite_checkpoint_handler.py:715] [process=6][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.054388s (all_items=0.000017s, per_item={'items': '0.00001693'}, temp_paths=0.054371) I0423 14:28:41.736239 139895056369472 event_tracking.py:125] [process=6] [async] Finished blocking save in 0.77 seconds. Continuing save @ gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_post_train_fixes_20260423_124541/nnx_xpk_feat_nnx_post_train_fixes_20260423_124541_03_dropout/checkpoints/9. I0423 14:28:41.736588 139765609391872 async_checkpointer.py:76] [process=6][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-23 14:48:41.736549 I0423 14:28:41.738530 139895056369472 checkpoint_manager.py:1560] [process=6][thread=MainThread][step=9] Starting CheckpointManager Save Finalize thread=save_finalize I0423 14:28:41.738771 139765617784576 async_checkpointer.py:280] [process=6][thread=save_finalize] Waiting for background save thread=async_save. I0423 14:28:41.738878 139895056369472 standard_logger.py:34] {'step': 9, 'event_type': 'save', 'directory': 'gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_post_train_fixes_20260423_124541/nnx_xpk_feat_nnx_post_train_fixes_20260423_124541_03_dropout/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776954489.7357473, 'wait_for_prev_duration_secs': 31.230125904083252, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776954520.9680495, 'checkpointer_blocking_duration_secs': 0.768683671951294, 'get_old_steps_start_time': 1776954521.7367566, 'get_old_steps_duration_secs': 3.123283386230469e-05, 'checkpoint_manager_blocking_start_time': 1776954489.7336404, 'checkpoint_manager_blocking_duration_secs': 32.005202293395996} I0423 14:28:41.739042 139895056369472 checkpointing.py:409] Started an asynchronous checkpoint save for step 9 I0423 14:28:41.739087 139895056369472 checkpoint_manager.py:2020] [process=6][thread=MainThread][step=9][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0423 14:28:47.436601 139742540617472 array_metadata_store.py:203] [process=6][thread=array_type_handler] Wrote 69 array_metadata.ArrayMetadata to gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_post_train_fixes_20260423_124541/nnx_xpk_feat_nnx_post_train_fixes_20260423_124541_03_dropout/checkpoints/9/items/array_metadatas/process_6 I0423 14:29:24.477470 139765609391872 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/gbytes_per_sec: 36.913 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 42.792076587677 s) (per-host) I0423 14:29:24.477610 139765609391872 async_checkpointer.py:90] [process=6][thread=async_save] 3 Handler Commit operations completed. Time taken: 42.740911s. I0423 14:29:30.577188 139765609391872 async_checkpointer.py:160] [process=6][thread=async_save] Background save thread done. Time taken: 48.840472s. I0423 14:29:30.577400 139765617784576 async_checkpointer.py:288] [process=6][thread=save_finalize] Done with waiting for background save thread=async_save. I0423 14:29:30.577467 139765617784576 async_checkpointer.py:298] [process=6][thread=save_finalize] No errors found in background save thread=async_save. I0423 14:29:30.577524 139765617784576 checkpoint_manager.py:2137] [process=6][thread=save_finalize][step=9] CheckpointManager Save Finalize is syncing with other hosts... I0423 14:29:30.578886 139765617784576 checkpoint_manager.py:2146] [process=6][thread=save_finalize][step=9] CheckpointManager Save Finalize is done on all hosts. I0423 14:29:30.579057 139895056369472 checkpoint_manager.py:2032] [process=6][thread=MainThread][step=9][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=9. I0423 14:29:30.579240 139895056369472 checkpoint_manager.py:2009] [process=6][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0423 14:29:30.580191 139895056369472 metric_logger.py:196] completed step: 9, seconds: 0.071, TFLOP/s/device: 11.289, Tokens/s/device: 1804.215, total_weights: 4096, loss: 7.016, lm_loss: 7.016, perplexity: 1113.843 Per train step: Total TFLOPs: 0.80 split as 99.60% learnable weight flops and 0.40% attention flops XPK End: Thu Apr 23 14:29:42 UTC 2026 EXIT_CODE=0